US3877969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated glass bottles
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1973-05-21
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Granted: 1975-04-15
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Expires: 1993-05-21
Abstract
Abstract Glass bottles, suitable as containers for drinks, such as, beer and fruit juices, are coated first with an olefine copolymer containing hydroxyl or both hydroxyl and carboxyl groups in its molecule, and then with a thermoplastic polyurethane. The so coated bottles break less easily than conventional glass bottles, show less tendency to scatter when they are broken, and are not easily scratched.
Inventors
- 👤 Tetsujiro Tatsumi
- 👤 Reiji Miyamoto
- 👤 Yutaka Matsui
- 👤 Seiji Kazama
- 👤 Tadao Takemura
- 👤 Hikoyoshi Kanayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:19
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/3405; B; B65; B65D; B65D23/00; B65D23/08; B65D23/0807; B65D23/0814; C03C17/28; C03C17/32; C03C17/322; Y; Y10; Y10S; Y10S215/00; Y10S215/06; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31587; Y10T428/31598; Y10T428/31601; Y10T428/31645; Y10T428/31649
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
42 words
A COATED GLASS BOTTLE COMPRISING A BOTTLE HAVING ON THE SURFACE THEREOF A FIRST COATTING LAYER OF AN OLEFINE COPOLYMER CONTAINING OGH GROUPS OR OH AND COOH GROUPS IN ITS MOLECULE AND A SECOND COATING LAYER OF A THERMOPLASTIC POLYURETHANE DIRECTLY THEREON.
Claim 2
Dependent Claim
42 words
A COATED GLASS BOTTLE COMPRISING A BOTTLE HAVING ON THE SURFACE THEREOF A FIRST COATTING LAYER OF AN OLEFINE COPOLYMER CONTAINING OGH GROUPS OR OH AND COOH GROUPS IN ITS MOLECULE AND A SECOND COATING LAYER OF A THERMOPLASTIC POLYURETHANE DIRECTLY THEREON.
Claim 3
Dependent Claim
17 words
A glass bottle as claimed in claim 1, wherein the olefine copolymer contains repeating units of a.
Claim 4
Dependent Claim
24 words
A glass bottle as claimed in claim 1, wherein the olefine copolymer contains OH groups rather than OH and COOH groups in its molecule.
Claim 5
Dependent Claim
44 words
A glass bottle as claimed in claim 1, wherein the olefine copolymer is a hydrolyzed product of a copolymer of an Alpha -olefine having 2 to 4 carbon atoms with vinyl acetate, the degree of hydrolysis being about 5 to about 100 mole percent.
Claim 6
Dependent Claim
55 words
A glass bottle as claimed in claim 1, wherein the thermoplastic polyurethane has a molecular weight of about 10,000 to about 500,000, and is prepared by reacting an organic diisocyanate with a low molecular diol having an average molecular weight of about 60 to about 1,000 at a mole ratio of NCO/OH of about 1/1.
Claim 7
Dependent Claim
60 words
A glass bottle as claimed in claim 5, wherein the diisocyanate is tolylene diisocyanate, omega , omega ''-diisocyanate dimethylbenzene, dicyclohexylmethane diisocyanate, or omega , omega ''-diisocyanate dimethyl cyclohexane, or a polyurethane diisocyanate which is prepared by reacting an excess amount of said diisocyanate and a low molecular diol and having an average molecular weight of about 60 to about 1000.
Claim 8
Dependent Claim
38 words
A glass bottle as claimed in claim 1, wherein the first coating layer has a thickness of about 50 to about 500 microns, and the second coating layer has a thickness of about 5 to about 200 microns.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |